99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2017 Fujitsu Ltd.
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* Author: Xiao Yang <yangx.jy@cn.fujitsu.com>
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*/
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/*\
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* [Description]
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*
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* quotactl(2) with XGETNEXTQUOTA looks for the next active quota for an user
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* equal or higher to a given ID, in this test the ID is specified to a value
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* close to UINT_MAX(max value of unsigned int). When reaching the upper limit
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* and finding no active quota, it should return -1 and set errno to ENOENT.
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* Actually, quotactl(2) overflows and and return 0 as the "next" active id.
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*
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* This kernel bug of xfs has been fixed in:
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*
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* commit 657bdfb7f5e68ca5e2ed009ab473c429b0d6af85
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* Author: Eric Sandeen <sandeen@redhat.com>
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* Date: Tue Jan 17 11:43:38 2017 -0800
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*
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* xfs: don't wrap ID in xfs_dq_get_next_id
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*/
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#define _GNU_SOURCE
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/quota.h>
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#include "tst_test.h"
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#include "quotactl_syscall_var.h"
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#ifdef HAVE_XFS_XQM_H
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# include <xfs/xqm.h>
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static uint32_t test_id = 0xfffffffc;
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static void verify_quota(void)
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{
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struct fs_disk_quota res_dquota;
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res_dquota.d_id = 1;
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TEST(do_quotactl(fd, QCMD(Q_XGETNEXTQUOTA, USRQUOTA), tst_device->dev,
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test_id, (void *)&res_dquota));
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if (TST_RET != -1) {
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tst_res(TFAIL, "quotactl() found the next active ID: %u unexpectedly",
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res_dquota.d_id);
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return;
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}
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if (TST_ERR == EINVAL)
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tst_brk(TCONF | TTERRNO,
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"Q_XGETNEXTQUOTA wasn't supported in quotactl()");
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if (TST_ERR != ENOENT)
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tst_res(TFAIL | TTERRNO, "quotactl() failed unexpectedly with %s expected ENOENT",
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tst_strerrno(TST_ERR));
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else
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tst_res(TPASS, "quotactl() failed with ENOENT as expected");
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}
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static void setup(void)
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{
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quotactl_info();
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fd = SAFE_OPEN(MNTPOINT, O_RDONLY);
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}
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static void cleanup(void)
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{
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if (fd > -1)
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.needs_root = 1,
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.needs_kconfigs = (const char *[]) {
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"CONFIG_XFS_QUOTA",
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NULL
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},
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.test_all = verify_quota,
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.mount_device = 1,
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.dev_fs_type = "xfs",
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.mntpoint = MNTPOINT,
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.mnt_data = "usrquota",
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.test_variants = QUOTACTL_SYSCALL_VARIANTS,
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.tags = (const struct tst_tag[]) {
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{"linux-git", "657bdfb7f5e6"},
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{}
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}
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};
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#else
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TST_TEST_TCONF("System doesn't have <xfs/xqm.h>");
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#endif
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